ATtiny87 Atmel Corporation, ATtiny87 Datasheet - Page 224
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ATtiny87
Manufacturer Part Number
ATtiny87
Description
Manufacturer
Atmel Corporation
Specifications of ATtiny87
Flash (kbytes)
8 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
16
Ext Interrupts
16
Usb Speed
No
Usb Interface
No
Spi
2
Twi (i2c)
1
Uart
1
Lin
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
15
Analog Comparators
1
Resistive Touch Screen
No
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.5
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 85
I/o Supply Class
1.8 to 5.5
Operating Voltage (vcc)
1.8 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
2
Output Compare Channels
3
Input Capture Channels
1
Pwm Channels
9
32khz Rtc
Yes
Calibrated Rc Oscillator
Yes
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATtiny87-A15MZ
Manufacturer:
Atmel
Quantity:
12 127
Company:
Part Number:
ATtiny87-A15SZ
Manufacturer:
Atmel
Quantity:
3 722
Company:
Part Number:
ATtiny87-A15XZ
Manufacturer:
Atmel
Quantity:
8 895
Part Number:
ATtiny87-SU
Manufacturer:
MICROCHIP/微芯
Quantity:
20 000
Company:
Part Number:
ATtiny87-SUR
Manufacturer:
Atmel
Quantity:
323
Company:
Part Number:
ATtiny87-XUR
Manufacturer:
ATMEL
Quantity:
8 272
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ATtiny87/ATtiny167
Return:
yet
Do_spm:
Wait_spm:
Wait_ee:
ld
cpse
rjmp
sbiw
brne
; To ensure compatibility with devices supporting Read-While-Write
; Return to RWW section
; Verify that RWW section is safe to read
in
sbrs
ret
; Clear temporary page buffer
ldi
call
rjmp
; Check for previous SPM complete
in
sbrc
rjmp
; Input: spmcsrval determines SPM action
; Disable interrupts if enabled, store status
in
cli
; Check that no EEPROM write access is present
sbic
rjmp
; SPM timed sequence
out
spm
; Restore SREG (to enable interrupts if originally enabled)
out
ret
r1, Y+
r0, r1
Error
loophi:looplo, 1
Rdloop
temp1, SPMCSR
temp1, RWWSB
spmcsrval, (1<<CPTB) | (1<<SELFPGEN)
Do_spm
Return
temp1, SPMCSR
temp1, SELFPGEN
Wait_spm
temp2, SREG
EECR, EEPE
Wait_ee
SPMCSR, spmcsrval
SREG, temp2
; If RWWSB is set, the RWW section is not ready
; use subi for PAGESIZEB<=256
8265B–AVR–09/10
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